Box-making ejecting mechanism.



C. BURNHAM.

BOX MAKING EJECTING MECHANISM.

APPLICATION FILED SEPT. 28. 1915.

Patented Jan. 8, 1918.

2 SHEETS-SHEET 1.

C. BURNHAM.

BOX MAKING EJECTING MECHANISM.

APPLICATION FILED SEPT. 28, 1915.

1,252,546, Patented Jan. 8,1918.

2 SHEETS-SHEET 2- E 1a .27 I f I ma @IMQFMG M v r a,

CHARLES BURNHAM, OF LOS ANGELES, CALIFORNIA.

BOX-MAKING EJ'ECTING MECHANISM.

Specification of Letters Patent.

Patented Jan. 8, 1918.

Application filed September 28, 1915. Serial No. 53,088.

To all whom it may concern:

Be it known that I, CHARLES BURNHAM, a citizen of the United States, and a resident of Los Angeles, county of Los Angeles, and State of California, have invented certain new and useful Improvements in Box- Making Ejecting Mechanisms, of which the following is a full, clear, and exact description.

This invention relates more particularly to the ejecting mechanism of machines for making berry or fruit baskets or boxes, such as disclosed in my Patent No. 1,119,343, dated December 1, 1914. i

In the character of machine, such as disclosed in the patent referred to, and to which this invention is particularly applicable, the baskets or boxes are madeentirely automatically from wood veneer. The veneer is placed in hoppers and is taken from the hoppers by pneumatic means and placed crosswise in a turret. The turret conveys the shooks arranged in this way between suitable punch and die mechanism and by which latter the shooks are formed into box shape. A rim of narrow metal has previously been formed from a ribbon of steel or other metal corresponding substantially to the shape of the open end of the box body and as the box body is formed by the punch and die mechanism, the ends of the shooks are forced into the binding and the latter clenched to the body so as to hold the latter in shape and complete the box or basket. The box or basket when completed is deposited in the turret, and the turret is moved to a position over the ejecting mechanism by which the completed baskets or boxes are successively ejected as they are made and the ejected boxes forced into a chute and stacked or nested for removal from the machine. It is the ejecting mechanism that is the subject-matter of the present invention, and the object of this invention is to simplify and improve this mechanism.

In the drawings, Figure 1 is a side elevation, partly in elevation and partly broken away, of one form of mechanism embodying my invention.

Fig. 2 is a vertical transverse section, partly broken away, looking at the mechanism from the rear.

Fig. 3 is a vertical section through the chute taken on the line III-1110f Figs. 2 and 5.

Fig. A is a Side elevation, partly broken away, of a different form of ejector mechanism, the mechanism being shown somewhat smaller than that of Figs. 1 and 2, in order that more of the machine frame may be shown; and

Fig. 5 is a rear elevation of the machine frame with the ejector mechanism.

The machine frame 10 may be of any suitable construction and .mounted to rotate in said frame is a turret 11, though instead of a turret any suitable holder may be employed which is adapted to hold one or more boxes or baskets and which, if movable, is adapted to place the boxes or baskets when completed in a position to be ejected from said turret 11 or other holder. The boxes or baskets are ordinarily of a rectangular form and are adapted to be seated in openings formed in the turret or holder 11 so as to rest in such a. way as to be easily forced out of said openings.

A head 12, corresponding substantially to the shape of the base or bottom of each basket or box is rigidly held to arms 13 so that said head is in-position to engage the box or basket bottom and to fit partly about the same when said head is forced upwardly as will be presently described.- The head comprises a base 14 with four upwardly extending plate-like parts 14* into which the box is adapted to rest easily in order that the said head may carry the same upwardly therewith. The arms 13 are substantially C-shaped and are mounted on a fixed stud or shaft 13*, the latter being held at its opposite ends in boxes 15 which are secured to a part of the machine frame 10. A crank arm 16 extends outwardly from each C shaped arm 13 and arranged between said arms 16 is the upper end of a connecting rod 17, said rod being connected by a pin 18 or otherwise to the arms 16. This rod 17 may be provided with a turnbuckle 18 by which said rod may be lengthened or shortened, and said rod has its lower end pivotally connected at 19 to a link 20. The link 20 is pivotally held by a bolt 21 to the inner end of an arm 22. This arm.22 is pivoted to rock up and down, and on the pivot bolt 21 is a trundle 23 which enters a cam groove 24 of a cam 25, the latter being secured to a cam shaft 26. As the cam shaft 26 is rotated and timed with the other mechanism of the machine, the cam 25 through the trundle 23 will rock the arm 22 and through the link 20, rod 17 and arms 13 will force the head 12 upwardly through the turret 11 so as to remove the completed box or basket from the turret.

A chute 27 is located above the turret 11 and is supported in the frame 10, and said chute is arranged horizontally and is adapted to receive the boxes as they are elevated by the head 12. The chute has a horizontally arranged trough-like member 28 and forms a continuation of a mouth piece or head 29. The head 29 may be substantially rectangular in form and is secured by bolts 30 or otherwise to the inner portion of the frame 10. The head 29 has a plate-like member 31 extending outwardly from the upper portion thereof and is curved, as at 32, at the lower portion to correspond with an are having the shaft 13 as a center. At the inner part of the head 29 is a substantially rectangular flange 33 and secured to said flange on each of the four sides thereof is a plate 34. Each plate 34 may be of spring material, as steel, and inclined so that its free forward end projects inwardly along the trough-like member 28 of the chute. These plates 34 are adapted to permit the completed boxes to be forced by the head 12 past the same and engage the boxes at the binding and prevent the boxes from being withdrawn from the trough by said head, and further said plates support the boxes in positlon to permit the next box or basket to be forced over the last box in the trough-like member 28 and nested 0r stacked with respect thereto, said boxes or baskets being progressively forced along the member 28 as the successive boxes are forced into the chute.

In Figs. 4 and 5, the construction is somewhat snnilar to that shown in Figs. 1 and 2, the frame 10 being shown more complete. ThlS construction is used for the small sized boxes or baskets while the construction shown in Figs. 1 and 2 is intended for a larger sized box, for example what are known as five-pound baskets. In the construction shown in Figs. 4 and 5, the cam action and its connection with the ejector by means of a vertically reciprocatory rod is substantially the same as already described. The chute also is substantially the same and for that reason similar reference characters are employed. The vertical reciprocatory rod 17 is operated as already described and at the upper end of said rod is connected to a crank arm 35. This arm is held to a shaft 35 which is supported at one end in a bracket or box 36 and at its other end in a bracket or box 37. At one end of the shaft 35 is'rigidly held a substantially C-shaped arm 38 to the outer end of which is held a head 39 similarly constructed to the head 12 of Figs. 1 and 2. In this construction a single arm 38 is employed instead of the two arms 13 of Figs. 1 and 2, and the shaft 35 is rotated instead of being fixed as is the case with the shaft 13 As the shaft 35 is rotated by its cam mechanism, the head 39 is forced upwardly through the turret 11 or otherwise so as to carry therewith the completed box and force the same into the chute 27 and stack or nest the box with those already forced into the chute in the manner already described in connection with Figs. 1 and 2.

It will be observed that a feature of importance lies in the use of a pair of curved goose-neck arms 13 and in attaching the operating rod 17 to the shaft carrying these arms at a point between the arms. This arrangement insures a positive, strong push on the box during the nesting operation. Another feature of importance lies in the means for operating the actuating rod 17, this means consisting of a link 22 pivoted to the stationary part of the frame in such manner as to swing vertically, a link connecting the free end of this arm to the end of said actuating rod 17, and a laterally-projecting trundle working in the groove of the cam. With this mechanism, steady, even, vertical reciprocation is given to the actuating rod, so as to thereby insure a direct push or pull during the thrusting action required to nest the boxes.

Having thus described 'my invention, I claim as new and desire to secure by Letters Patent 1. In a machine of the class described, the

combination of a holder for the box, a head adapted to engage the box, a rock-shaft carrying a pair of separated curved arms conmeeting said shaft to said head, a crank-arm connected to the said shaft, a vertical rod extending up between said curved arms and pivotally connected to said crank-arm, means for vertically reciprocating said rod,

and a chute arranged above said head and adapted to receive the boxes in succession as they are moved upwardly by said head.

2. In a machine of the class set forth, a chute adaptedto receive the boxes in succes sion, mechanism for thrusting the boxes in succession into said chute, .said mechanism embodying a vertical reciprocatory rod, :1

vertically-swinging link pivotally connected to the frame of the machine at one end, another link pivotally connecting the free end of the aforesaid link to the lower end of said reciprocatory rod, a shaft provided with a grooved cam, and a trundle or roller connected to the free end of said link and working in the groove of the cam.

This specification signed this 20th day of September, A. D. 1915.

. CHARLES BURNHAM. 

